Do I need a NAPSC here?

[robert_h]

You always needs the napsc, it doesn’t work without it.

282 single HC vs. Double HC

The HiCaps need to be matched as I understand it, such as sequential serial numbers although that may not be possible in this case. Ive heard the addition of 2nd HC on an 82 which made a good improvement - for me. I expect some will say skip the HC and get a supercap & would consider that if a future 252 was a possibility. Happy Christmas, bonne fete.